{"product_id":"square-d-mhl26400-circuit-breaker","title":"Square D | MHL26400 | Circuit Breaker | 400A | 2-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D MHL26400 circuit breaker—a rugged, high-capacity protective device designed for demanding electrical systems. This 400A, 2-pole, 600V breaker is ideal for maintenance, retrofit, and replacement projects where exact specs matter.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e MHL26400\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy the MHL26400 stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDirect compatibility with Square D panels and enclosures that require the MHL-series protection device, delivering reliable overcurrent protection for heavy-load circuits.\u003c\/li\u003e \u003cli\u003eStrong protection for feeders and equipment in commercial and industrial settings, helping prevent outages and equipment damage due to overcurrent events.\u003c\/li\u003e \u003cli\u003eDurable design built for service life in demanding environments, supporting retrofit projects without major changes to your electrical architecture.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects upgrading service feeders to accommodate higher loads without changing the entire panel.\u003c\/li\u003e \u003cli\u003eMaintenance and replacement scenarios where existing MHL devices are aging or require a precise spec match.\u003c\/li\u003e \u003cli\u003eNew installations in facilities already using Square D protection components, ensuring cohesive system protection and easier ongoing maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eInstallation and compatibility notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify fit and ratings before ordering. The part number MHL26400 is the best reference for compatibility with your panel or enclosure.\u003c\/li\u003e \u003cli\u003eEnsure your equipment is rated for 600V and that the 400A current rating matches the system load and conductor sizing.\u003c\/li\u003e \u003cli\u003eConsult your electrical drawings and follow local electrical codes. A licensed electrician should perform installation and verification.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eKeep a spare MHL26400 in your maintenance stock for quick swap-outs during preventive maintenance or unexpected outages.\u003c\/li\u003e \u003cli\u003eDocument the breaker’s location, rating, and panel compatibility to streamline future replacements and inspections.\u003c\/li\u003e \u003cli\u003eCross-check the existing protective device family to avoid mismatches in trip characteristics and coordination with adjacent breakers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426392756386,"sku":"MHL26400","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-mhl26400-circuit-breaker-400a-2-pole-600v-603.webp?v=1789568535","url":"https:\/\/www.ampstate.com\/products\/square-d-mhl26400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}